Gammex 403 LE, User Manual

Page 1: ...403 LE Precision Multi Purpose Phantoms User s Guide...

Page 2: ...e Phantom 7 Target Specifications 11 Cystic Targets 11 Pin Targets 11 Resolution Target Groups 11 Phantom Specifications 13 Physical Specifications 13 Tissue Mimicking Background Material 13 Low Scatt...

Page 3: ...onic caliper measurement Pin targets have been included to allow for testing high frequency transducers that are designed to image the first few centimeters of tissue The phantom uses the latest techn...

Page 4: ...temperatures will accelerate desiccation Weigh the 403 LE to monitor desiccation Weigh the phantom when you first receive it and then every 6 months after that Record the values on the data sheet Do n...

Page 5: ...l or lanolin based gels as a coupling medium Poor transmission is a result of insufficient coupling Do not press the transducer into the scanning surface This damages the scanning surface and will sho...

Page 6: ...l correspond very well to measured values seen in human tissue These qualities give the phantom its smooth appearance and allow the use of normal scanner control settings which mimic a realistic scann...

Page 7: ...om You may notice that the tissue echoes near the bottom of the phantom fade into noise The depth at which usable echoes disappear is called the depth of penetration The depth markers on the phantom l...

Page 8: ...in targets The vertical pins have 2 cm spacing while the horizontal pins have 3 cm spacing Use the pin targets to determine vertical distance accuracy and horizontal distance accuracy Note that the hi...

Page 9: ...o vertical overlap is called the scanner s axial resolution Pin targets are resolved axially if an imaginary horizontal line can be drawn between the targets without touching either target The targets...

Page 10: ...et groups as part of the cyst imaging test 9 Decrease image depth to the minimum and examine the dead zone target group The dead zone targets can also be used to measure lateral resolution in the extr...

Page 11: ...cing 10 mm at 2 to 4 cm deep 20 mm at 4 to 16 cm deep Horizontal spacing 30 mm at 2 and 12 cm deep additional pin spaced at 10 mm in shallow set Resolution Target Group 3 8 and 14 cm deep All acoustic...

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Page 13: ...eed of sound 1540 10 m s Temperature dependence on speed of sound 1 5 m s C Attenuation coefficient 0 7 0 05 dB cm MHz 0 5 0 05 dB cm MHz refer to phantom side label Nonlinearity parameter B A 6 6 0 3...

Page 14: ...attenuation as there would be if the higher frequency were used to generate the pulses at the transducer So higher frequency resolution occurs for greater depths within the subject than if conven tion...

Page 15: ...controlled environments the phantom weight should be checked every six months Phantoms used in high temperature low humidity environments or in mobile situations should be tested more frequently As th...

Page 16: ...y Seller upon Seller s ex amination Buyer shall pay all transportation charges SELLER SHALL NOT BE OTHERWISE LIABLE FOR ANY DAMAGES INCLUDING BUT NOT LIMITED TO INCIDENTAL DAMAGES CONSEQUENTIAL DAMAGE...

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Page 18: ...18 Notes...

Page 19: ...19 Notes...

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